CustomInvocable

STATUS: ACTIVE

This class is an example of how to implement the Invocable Abstract Class. It doesn't do much, but it does illustrate how BulkCallable, Invocable, UniversalInvocable, UniversalFlowInputOutput and UniversalFlowInputOutputParameter work together to expose multiple methods to Flow. Please understand this is an example class demonstrating the work an Apex developer would need to take to make the following class methods available to Flow: daysTillChristmas and daysBetweenDates.

Inheritance

UFInvocable > CustomInvocable

Methods

public List daysTillChristmas(List<Date> startingDates)

Method exposes the Apex Date method daysBetween to Flow. It accepts a single list of parameter for the start date, then calculates the days between the start date and Christmas.

Parameters

Param	Description
startingDates	List to start the calculation from.

Returns

Type	Description
List	List List of days between the starting date and Christmas.

public List daysBetweenDates(List<Date> startingDates, List<Date> endingDates)

This method exposes the Apex date method daysBetween to flow accepting two lists of date parameters, one for startDate and one for endDate. It calculates the days between the two dates.

Parameters

Param	Description
startingDates	List List of dates to start the calculation from.
endingDates	List List of dates to end the calculation at.

Returns

Type	Description
List	List List of days between the starting date and ending date.

public override List call(String methodName, List<Map<String,Object>> param2)

This is the method required by the BulkCallable interface. This is the method you'll need to implement in any classes you wish to expose to flow.

Parameters

Param	Description
methodName	String name of the method to be invoked
param2	List<Map<String, Object>> List of parameters to be passed to the method.

Returns

Type	Description
List	List of Objects to be returned to Flow.

protected List extractParameter(String parameterName, List<Map<String,Object>> parameters, Type parameterListType)

Inherited

Extracts values from a list of parameters. Used by implementations of the Invocable framework.

Parameters

Param	Description
parameterName	the parameter name to extract into the list
parameters	the parameters provided by the flow framework
parameterListType	the Type of the new list to create

Returns

Type	Description
List	List<Object> The list of extracted values, in the same data type as requested

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